JWST Preps for Its Cameras

On the occasion of the recent revealing of the James Webb Space Telescope's completed golden mirror array, I wrote a post describing the mirror(s) and how they got their golden atom-thin sheen. Apropos of that, a couple of pretty nifty videos were recently released. Right now, JWST is in the big "clean room" at Goddard Space Flight Center, a huge warehouse-like room that is kept almost entirely free of dust and other particulates that might muck up the optical works. There are a couple of webcam...